Unitary guide for sliding panels

ABSTRACT

A unitary guide including a guide body having a guide element extendable through the guideway entrance and a laterally extending lug engageable with the shoulder within an elongated guideway. The guide body includes a lateral portion bridgeable across the entrance and being of a lateral dimension to inhibit ingress through the entrance when the element is positioned through the entrance. A resilient flexing portion is connected to the lateral portion whereby the lateral portion may bend about a longitudinal axis generally parallel with the guideway. The element and lug are insertable through the entrance by a pushing force thereon exerted perpendicularly to the guideway thereby bending the flexing portion. The element and lug are of a smaller lateral dimension with the flexing portion in a bent condition than the entrance to permit ingress of the element and lug therethrough and into the guideway. The element and lug are of a normal lateral dimension to inhibit egress thereof through the entrance after seating of the element and lug in the guideway by an outwardly pulling force thereon exerted perpendicularly to the guideway. The body has another lateral portion spaced from and above the first lateral portion and defining therebetween and with the flexing portion a space to permit first lateral portion to be swung thereinto upon bending of the flexing portion. The element includes a cam surface disposed rearwardly of the lug, such cam surface and lug being engageable with the entrance upon initial insertion of the element into the entrance.

United States Patent [451 Aug. 15, 1972 Tanner [54] UN ITARY GUIDE FORSLIDING PANELS [72] Inventor: Homer C. Tanner, Jacksonville, Fla.

[73] Assignee: Southeastern Aluminum Products,

Inc., Jacksonville, Fla.

[22] Filed: March 12, 1971 [21] Appl. No.: 123,661

[52] US. Cl ..l6/90, 49/410 [51] Int. Cl. ..E05d 13/00 [58] Field ofSearch ..49/409-4l 1; 16/93, 16/90 [56] References Cited UNITED STATESPATENTS 3,261,129 7/ 1966 Brydolf et a]. ..49/41l 3,457,676 7/ I969Ziegler 16/93 X 2,784,445 3/ 1957 Greig et a1. ..49/4l0 X PrimaryExaminer-Kenneth Downey AttorneyGeorge H. Baldwin and Arthur G. Yeager 57 ABSTRACT A unitary guide including a guide body having a guide elementextendable through the guideway entrance and a laterally extending lugengageable with the shoulder within an elongated guideway. The guidebody includes a lateral portion bridgeable across the entrance and beingof a lateral dimension to inhibit ingress through the entrance when theelement is positioned through the entrance. A resilient flexing portionis connected to the lateral portion whereby the lateral portion may bendabout a longitudinal axis generally parallel with the guideway. Theelement and lug are insertable through the entrance by a pushing forcethereon exerted perpendicularly to the guideway thereby bending theflexing portion. The element and lug are of a smaller lateral dimensionwith the flexing portion in a bent condition than the entrance to permitingress of the element and lug therethrough and into the guideway. Theelement and lug are of a normal lateral dimension to inhibit egressthereof through the entrance after seating of the element and lug in theguideway by an outwardly pulling force thereon exerted perpendicularlyto the guideway. The body has another lateral portion spaced from andabove the first lateral portion and defining therebetween and with theflexing portion a space to permit first lateral portion to be swungthereinto upon bending of the flexing portion. The element includes acam surface disposed rearwardly of the lug, such cam surface and lugbeing engageable with the entrance upon initial insertion of the elementinto the entrance.

16 Claims, 6 Drawing Figures PATENTEDAUG 15 m2 IN VE N 70/? HOMW' 6.Tanner A TTORNI) 1 UNITARY GUIDE FOR SLIDING PANELS BACKGROUND OF THEINVENTION 1. Field of the Invention This invention relates to guides andmore particularly to a unitary guide for guiding sliding panels alongSUMMARY OF THE INVENTION A unitary guide in one aspect of the inventionincludes a guide body having a guide element at one extremity extendablethrough the guideway entrance and having a laterally extending lugengageable with the shoulder within the elongated guideway. The bodyincludes flexing means connected to the element for swinging the elementand lug about a longitudinal axis. The guide element and lug with theflexing means in flexed condition have a smaller lateral dimension thanthe entrance to permit ingress of the element and lug therethrough by aninwardly pushing force on the body exerted perpendicularly to theguideway thereby flexing the flexing means. The element and lug are oflateral dimension when seated in the guideway to inhibit egress thereofthrough the entrance by an outwardly pulling force thereon exertedperpendicularly to the guideway.

In other aspects, the invention includes a cam surface disposedrearwardly of the lug with the cam surface and lug being engageable withthe entrance upon initial insertion of the element therethrough. Theelement has a pair of generally parallel and opposite surfaces adjacentrespective lug and cam surface and engageable with respective edgesdefining the entrance when guide element is seated in the guideway. Theelement includes an end engageable with the bottom surface of theguideway. The flexing means includes a lateral portion bridgeable acrossthe entrance and being of a lateral dimension to inhibit ingress thereofthrough the entrance when the element is positioned through theentrance, such portion being slidably engaged with the guideway housingalong and adjacent the entrance. The flexing means also includes aresilient flexing portion connected to the lateral portion whereby thelateral portion and guide element and lug may be swung about thelongitudinal axis. The guide body includes another lateral portionconnected generally perpendicularly with the flexing portion and beinggenerally parallel to and oppositely disposed across a space definedbetween such lateral portions and the flexing portion.

A general object of the present invention is to provide an improvedunitary guide for sliding panels.

A particular object is the provision of a bendable portion of the guideso that the single guide element and laterally extending lug may beinserted or snapped into the elongated guideway through an entrancethereof.

Another particular object is directed to a cam surface on the guideelement disposed oppositely to the bendable portion for forcing theguide element and lug to a position in which the lateral dimension istemporarily less than the lateral dimension of the entrance when apushing force is exerted on the guide to insert the element and lug intothe guideway.

A specific object is to provide an improved unitary guide in which alateral portion above the guide element bridges across the entrance andengages the upper surfaces of the guideway adjacently above theentrance.

Another specific object is the provision of a lateral portion bridginglyabove the entrance, a guide element extending through the entrance and aresiliently flexing portion above the lateral portion in which the guideelement and lateral portion are swung upwardly to insert the guideelement and lug through the entrance of the guideway.

A further specific object is to provide an improved unitary lower guidewhich prevents inadvertent removal of the guide element from theguideway and provides smooth sliding therealong. Also, the guide elementextends sufficiently in the direction of the elongated guideway andentrance to inhibit twisting and wedging thereof in the guideway andentrance.

Other specific objects of this invention are the provision of a unitaryguide readily and inexpensively fabricated, easy to install, and durableand efi'rcient in operation.

The novel features which are believed to be characteristic of thisinvention are set forth with particularity in the appended claims. Theinvention itself, however, both as to its organization and method ofoperation, together with further objects and advantages thereof, maybest understood by reference to the following description taken inconnection with the accompanying drawing.

BRIEF DESCRIPTION OF DRAWING FIG. 1 is a front elevational view of asliding door assembly utilizing the unitary guide in accord with theinvention;

FIG. 2 is a cross sectional view taken along line 2-2 of FIG. 1;

FIG. 3 is a partial top plan view taken along line 3-3 of FIG. 2;

FIG. 4 is a partial cross sectional view taken along line 4-4 of FIG. 3;

FIG. 5 is a partial cross sectional view taken along line 5-5 of FIG. 4;and

FIG. 6 is an enlarged partial cross sectional view taken along line 6-6of FIG. 5 and showing the guide being inserted into the track.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now more particularlyto the drawing, FIG. 1 depicts a sliding door assembly generally at 11including a pair of sliding and bypassing doors 12 and 13 with door 13being outwardly disposed relative to door 12, assembly 11 beinginstalled in a rectangular doorway 15. Each of doors 12 and 13 areslidingly suspended by a pair of spaced wheels 16 which roll within anupper track (not shown), wheels 16 of door 13 being disposed in theouter track guideway and wheels 16 of door 12 being disposed in innertrack guideway as clearly depicted in applicants pending US. Pat.application, Ser. No. 70,383, filed Sept. 8, 1970 and entitled PANELFRAME ASSEMBLY. Each of doors l2 and 13 are slidingly guided by a pairof spaced lower guides 20 which extend into respective guideways 21 and22 of lower track 23, track 23 being installed in doorway 15 by spacedfasteners 24 along its length and being generally parallel to the uppertrack which is similarly affixed in doorway 15. A common type fasciaplate 26 is suitably connected to the upper track to outwardly cover orconceal the upper track and the upwardly extending suspension members(not shown) which are suitably connected to the doors 12 and 13 and attheir upper end portions rotatably mount respective wheels 16, as morefully described in applicants aforesaid pending application.

Each of the doors l2 and 13 are substantially identical and furtherdescription of door 12 will sufi'rce to particularly describe theinvention. Door 12 includes a panel frame assembly, generally indicatedby reference numeral 30, and a panel 31 of any suitable material, suchas plywood, paneling, plastic or the like. The frame assembly 30includes a pair of generally horizontal and identical rails 32 and 33and a pair of generally vertical and identical stiles 34 and 35, stile34 being behind stile 35 of door 13, and four unitary comer connectors,including comer connectors 37, disposed in each corner and connectingone stile and one rail together, as fully described in applicantsaforesaid pending application. Each of the rails and stiles 32-35includes a channel 40 opening and facing inwardly with respect to thepanel 31 and receiving respective edge portions 41 and 42 of panel-31thereinto as depicted in FIGS. 2 and 3.

Each of stiles 34 and 35 includes another channel 46 opening and facinginwardly with respect to panel 31 and in the same general direction aschannel 40, channel 46 having a rear side wall 47 extending horizontallyand a lip 48 extending toward the other channel 40 and generallyparallel with the channel bottom wall 49. A generally upright portion 50of comer connector 37 is disposed in and conforms generally in outlineto the space defined by and internally of channel 46. Means areassociated between upright portion 50 and channel 46 to affix theconnector 37 thereto and is seen to herein specifically include a comerconnector shoulder 51 engaging channel lip shoulder 52 which is formedby a cutout 53 in lip 48 as shown in FIGS. 3 and 4. With the shoulders51 and 52 in engagement the lower surface 55 of laterally extendingportion 56 of comer connector 37 is generally flush with the lowerextent of rail 33 as shown in FIG. 2. Rail 33 includes an opening 58, asclearly seen in FIG. 4, spaced from the end portion 59 and through whichanother upright portion 60 extends, portion 60 being spaced from portion50 and extends generally in the same direction as portion 50. Opening 58is generally rectangular and the upper housing portion 62 of uprightcomer portion 60 is generally rectangular and substantially fits withinopening 58. Means are associated between upright portion 60 and rail 33to affix the connector 37 thereto and is seen to herein specificallyinclude a corner connector shoulder 64 engaging beneath a shoulder 65defining opening 58 in rail 33 whereby comer and rail are selflockedwithout other separate components.

While comer connector 37 is shown at the lower left hand comer of door12, the identical comer connector may be employed at the lower righthand comer in which event shoulder 51 would engage a similar shoulder 52of the corresponding lip of stile 35. Also, identical comer connectorsare employed at the upper comers of door 12 with appropriate suspensionmembers, as generally explained in applicant's aforesaid pendingapplication.

A unitary guide 20 in accord with this invention is disposed withinpassageway 68 of comer connector 37 and is freely movable upwardly anddownwardly therein. Guide 20 includes a body 69 of rectangularconfiguration having side walls 70 and 71 and top wall 72 and lateralportion in the form of bottom wall 73 with a web planar member 75 beingmedially disposed interconnecting and reinforcing walls 70-73. The guide20 further includes an upwardly extending element 76 connected to body69 and top wall 72, element 76 extending through opening 77 in the top78 of upper housing portion 62.

At the lower end portion 94 of guide 20 is an integral guide element 95terminating in a laterally extending lug 96 which prevents inadvertentremoval of the guide member 20 from guideway 22 of track 23, track 23including a slot or entrance 97 into guideway 22 along its length withthe lateral distance thereof being less than the distance between theextremity 98 of log 96 and the rearward surface 99, as clearly shown inFIGS. 2 and 6, surfaces 98 and 99 being generally parallel. Track 22includes a shoulder 101 defining track entrance 97 adapted to be engagedby lug surface 102 to prevent inadvertent dislodgement of guide element95 from within guideway 22. Guide element 95 is provided with a camsurface 103 and cam surface 104 so that when the guide element 95 isinitially inserted or pressed into and through entrance 97, the guideelement 95 is swung upwardly about a longitudinal axis, as hereinaftermore fully described, which is generally parallel to guideway 22, so asto reduce the distance between the extremity 98 of foot 96 and camsurface 103 so that the guide element 95 may pass through entrance 97and be positioned within guideway 22 with lug 96 extending laterally ofshoulder 101. When guide element 95 is properly positioned, the verticaland parallel surfaces 99 and 105 extend through the entrance 97, and thelug 96 and the portion 106 bounded by cam surface 103 are withinguideway 22, as clearly shown in FIG. 6.

Guide 20 includes a lateral portion 107 of sufficient lateral dimensionto bridge across the entrance 97 for inhibiting ingress thereof throughsuch entrance 97. In common practice, however, the bottom surface 108may engage or ride on the upper outer surface 109 of track housing 110forming guideway 22, top surface 109 being interrupted by longitudinallyextending entrance 97. Also the bottom surface 111 of guide elementlower end portion 94 may engage or ride on the inner surface 112 oftrack housing 110. Due to the fact that irregularities do exist in thevertical distances between the upper track and lower track 23, the guidewill either have both surfaces 108 and 111 engaged with respectivehousing surfaces 109 and l 12 or the lug surface 102 will be engagedwith shoulder 101. However, since the guide element 20 is relativelyfreely slidable in housing upright portion 60, the position shown inFIGS. 2, 4 and 6 is the usual position assumed by element 20 withrespect to guideway 22.

Flexing means 115 are disposed between guide body 69 and lateral portion107 whereby the guide element 94 and lug 96 may be swung about alongitudinal axis extending generally parallel with guideway 22 or withentrance 97. Flexing means 115 may be seen to include lateral portion107, a resilient flexing portion 116 extending generally perpendicularlywith respect to lateral portion 107 and another lateral portion 117extending perpendicularly with respect to flexing portion 116 and beinggenerally parallel with and adjacently spaced above lateral portion 107.Lateral portions 107 and 117 are flexing portion 116 define a space 118to permit lateral portion 107 to be swung upwardly to temporarily assumethe broken line position 120 as shown in FIG. 6 upon forcible depressionof guide 20, as hereinafter more fully described.

With the door 12 properly suspended in the upper track and the guide 20being fully withdrawn into housing upright portion 60 of comer connector37, element 76 is initially depressed so that element 95 assumes thebroken line position 121 at the entrance 97 of guideway 22. Upon furtherdepression of element 76, lateral portion 107 is swung upwardly with theflexing portion 116 in bent condition and the guide 20, comer connector37 and door 12 being temporarily displaced laterally with respect to theseated condition of guide element 94 within guideway 22. In other words,the guide 20 with the cam surface 103 and lug surface 98 engagingentrance 97 is laterally offset to the left, as seen in FIG. 6, uponinitial engagement of the guide element 94 in entrance 97, and guide 20becomes offset to the right when the corner 122 of lug 96 passes throughthe entrance 97 with the flexing portion 1 16 in bent condition and thelateral portion 107 occupying a part of space 118. Thereupon, the guide20 becomes operatively seated with respect to guideway 22 with theseated position being between the right and left offset positions asdescribed above.

While the invention has been described with respect to a certainspecific embodiment, it will be appreciated that many modifications andchanges may be made by those skilled in the art without departing fromthe spirit of the invention. It is intended therefore, by the appendedclaims to cover all such modifications and changes as fall within thetrue spirit and scope of the invention.

What is claimed as new and what it is desired to secure by LettersPatent of the United States is: V

l. A unitary guide for use in a longitudinal guideway of a track havingan inwardly directed shoulder defining an entrance and communicatingbetween the guideway and outwardly thereof comprising a guide bodyhaving a guide element extendable through the entrance and having alaterally extending lug engageable with the shoulder within theguideway, said guide body having a lateral portion integral with saidguide element and bridgeable across the entrance and being of sufficientlateral dimension to inhibit ingress thereof through the entrance whensaid guide element is posi tioned through the entrance, said body havinga flexing portion connected to said lateral portion whereby said lateralportion may bend about a longitudinal axis, said guide element and lugbeing of sufficient lateral dimension to inhibit egress thereof throughthe entrance by an outwardly pulling force thereon exertedperpendicularly to the longitudinal guideway, said guide element andsaid lug being insertable through the entrance by a pushing forcethereon exerted perpendicularly to the longitudinal guideway therebybending said flexing portion, said guide element and lug having alateral dimension with said flexing portion in a bent conditionsufiiciently smaller than the entrance to permit ingress of said guideelement and lug therethrough and into the guideway.

2. The guide as defined in claim 1 wherein said guide body has a spaceadjacent said lateral portion located opposite to said guide element,said flexing portion being located adjacent said lug.

3. The guide as defined in claim 1 wherein said flexing portion islocated adjacent said lug, said guide body having another lateralportion spaced from said lateral portion and defining therebetween andwith said flexing portion a space to permit said lateral portion to beswung thereinto upon bending of said flexing portion.

4. The guide as defined in claim 1 wherein said guide element includes acam surface disposed rearwardly of said lug, said cam surface and saidlug engageable with the entrance upon initial insertion of said guideelement into the entrance.

5. The guide as defined in claim 1 wherein said guide body includes anelongated portion adjacent said flexing portion and adapted and arrangedto be slidably engaged within a housing attached to a sliding door, saidelongated portion and flexing portion and lateral portion defining aspace to permit said lateral portion with said attached guide elementand lug to be swung about said longitudinal axis thereby partiallyclosing said space.

6. The guide as defined in claim 1 wherein said flexing portion isresilient so that after bending thereof to permit insertion of saidguide element and lug through the entrance the flexing portion willreturn to its original unbent condition with said guide elementextending through the entrance and said guide element and lug beinglocated in the guideway.

7. A unitary guide for use in a longitudinal guideway of a track havingan inwardly directed shoulder defining an entrance and communicatingbetween the guideway and outwardly thereof comprising a guide bodyhaving a guide element at one extremity extendable through the entranceand having a laterally extending lug engageable with the shoulder withinthe guideway, said guide body including flexing means connected to saidguide element for swinging said guide element and lug about alongitudinal axis, said guide element and lug being of sufficientlateral dimension to inhibit egress thereof through the entrance by anoutwardly pulling force thereon exerted perpendicularly to thelongitudinal guideway, said guide element and lug having a lateraldimension with said flexing means in flexed condition sufficientlysmaller than the entrance to permit ingress of said guide element andlug therethrough by an inwardly pushing force on said guide body exertedperpendicularly to the longitudinal guideway thereby flexing saidflexing means.

8. The guide as defined in claim 7 wherein said flexing means isresilient.

9. The guide as defined in claim 7 wherein said guide element includesan end engageable with the bottom surface of the guideway.

10. The guide ad defined in claim 7 wherein said guide element includesa cam surface disposed rearwardly of said lug, said cam surface and lugengageable with the entrance upon initial insertion of said guideelement into the entrance.

11. The guide as defined in claim 10 wherein said guide element includesa pair of generally parallel and opposite surfaces adjacent respectivesaid lug and cam surface and being engageable with respective edgesdefining the entrance.

12. The guide as defined in claim 7 wherein said flexing means includesa lateral portion integral with said guide element and bridgeable acrossthe entrance and being of sufficient lateral dimension to inhibitingress thereof through the entrance when said guide element ispositioned through the entrance and a flexing portion connected to saidlateral portion whereby said lateral portion and guide element and lugmay be swung about said longitudinal axis.

13. The guide as defined in claim 12 wherein said lateral portion isadapted and arranged to engage the track outwardly of the entrance.

14. The guide as defined in claim 12 wherein said lateral portion andflexing portion are generally perpendicularly connected with a spacebeing defined therebetween to permit swinging of said lateral portiontoward said flexing portion.

' 15. The guide as defined in claim 14 wherein said guide body includesanother lateral portion connected generally perpendicularly with saidflexing portion and being generally parallel to and oppositely disposedacross said space from said lateral portion.

16. The guide as defined in claim 7 wherein said guide element extendslongitudinally of the guideway and having an elongated dimension greaterthan the lateral dimension of the guideway whereby twisting andlodgement of said guide element in the guideway is inhibited.

1. A unitary guide for use in a longitudinal guideway of a track havingan inwardly directed shoulder defining an entrance and communicatingbetween the guideway and outwardly thereof comprising a guide bodyhaving a guide element extendable through the entrance and having alaterally extending lug engageable with the shoulder within theguideway, said guide body having a lateral portion integral with saidguide element and bridgeable across the entrance and being of sufficientlateral dimension to inhibit ingress thereof through the entrance whensaid guide element is positioned through the entrance, said body havinga flexing portion connected to said lateral portion whereby said lateralportion may bend about a longitudinal axis, said guide element and lugbeing of sufficient lateral dimension to inhibit egress thereof throughthe entrance by an outwardly pulling force thereon exertedperpendicularly to the longitudinal guideway, said guide element andsaid lug being insertable through the entrance by a pushing forcethereon exerted perpendicularly to the longitudinal guideway therebybending said flexing portion, said guide element and lug having alateral dimension with said flexing portion in a bent conditionsufficiently smaller than the entrance to permit ingress of said guideelement and lug therethrough and into the guideway.
 2. The guide asdefined in claim 1 wherein said guide body has a space adjacent saidlateral portion located opposite to said guide element, said flexingportion being located adjacent said lug.
 3. The guide as defined inclaim 1 wherein said flexing portion is located adjacent said lug, saidguide body having another lateral portion spaced from said lateralportion and defining therebetween and with said flexing portion a spaceto permit said lateral portion to be swung thereinto upon bending ofsaid flexing portion.
 4. The guide as defined in claim 1 wherein saidguide element includes a cam surface disposed rearwardly of said lug,said cam surface and said lug engageable with the entrance upon initialinsertion of said guide element into the entrance.
 5. The guide asdefined in claim 1 wherein said guide body includes an elongated portionadjacent said flexing portion and adapted and arranged to be slidablyengaged within a housing attached to a sliding door, said Elongatedportion and flexing portion and lateral portion defining a space topermit said lateral portion with said attached guide element and lug tobe swung about said longitudinal axis thereby partially closing saidspace.
 6. The guide as defined in claim 1 wherein said flexing portionis resilient so that after bending thereof to permit insertion of saidguide element and lug through the entrance the flexing portion willreturn to its original unbent condition with said guide elementextending through the entrance and said guide element and lug beinglocated in the guideway.
 7. A unitary guide for use in a longitudinalguideway of a track having an inwardly directed shoulder defining anentrance and communicating between the guideway and outwardly thereofcomprising a guide body having a guide element at one extremityextendable through the entrance and having a laterally extending lugengageable with the shoulder within the guideway, said guide bodyincluding flexing means connected to said guide element for swingingsaid guide element and lug about a longitudinal axis, said guide elementand lug being of sufficient lateral dimension to inhibit egress thereofthrough the entrance by an outwardly pulling force thereon exertedperpendicularly to the longitudinal guideway, said guide element and lughaving a lateral dimension with said flexing means in flexed conditionsufficiently smaller than the entrance to permit ingress of said guideelement and lug therethrough by an inwardly pushing force on said guidebody exerted perpendicularly to the longitudinal guideway therebyflexing said flexing means.
 8. The guide as defined in claim 7 whereinsaid flexing means is resilient.
 9. The guide as defined in claim 7wherein said guide element includes an end engageable with the bottomsurface of the guideway.
 10. The guide ad defined in claim 7 whereinsaid guide element includes a cam surface disposed rearwardly of saidlug, said cam surface and lug engageable with the entrance upon initialinsertion of said guide element into the entrance.
 11. The guide asdefined in claim 10 wherein said guide element includes a pair ofgenerally parallel and opposite surfaces adjacent respective said lugand cam surface and being engageable with respective edges defining theentrance.
 12. The guide as defined in claim 7 wherein said flexing meansincludes a lateral portion integral with said guide element andbridgeable across the entrance and being of sufficient lateral dimensionto inhibit ingress thereof through the entrance when said guide elementis positioned through the entrance and a flexing portion connected tosaid lateral portion whereby said lateral portion and guide element andlug may be swung about said longitudinal axis.
 13. The guide as definedin claim 12 wherein said lateral portion is adapted and arranged toengage the track outwardly of the entrance.
 14. The guide as defined inclaim 12 wherein said lateral portion and flexing portion are generallyperpendicularly connected with a space being defined therebetween topermit swinging of said lateral portion toward said flexing portion. 15.The guide as defined in claim 14 wherein said guide body includesanother lateral portion connected generally perpendicularly with saidflexing portion and being generally parallel to and oppositely disposedacross said space from said lateral portion.
 16. The guide as defined inclaim 7 wherein said guide element extends longitudinally of theguideway and having an elongated dimension greater than the lateraldimension of the guideway whereby twisting and lodgement of said guideelement in the guideway is inhibited.